/Engine/Plugins/Runtime/GeometryProcessing/Source/DynamicMesh/Public/Parameterization/MeshRegionGraph.h
Build a region graph for a Mesh using the given triangle sets
void BuildFromTriangleSets ( const [FDynamicMesh3](API\Runtime\GeometryCore\DynamicMesh\FDynamicMesh3) & Mesh, const [TArray](API\Runtime\Core\Containers\TArray)< [TArray](API\Runtime\Core\Containers\TArray)< int32 >> & TriangleSets, [TFunctionRef](API\Runtime\Core\GenericPlatform\TFunctionRef)< int32(int32)> ExternalIDFunc, [TFunctionRef](API\Runtime\Core\GenericPlatform\TFunctionRef)< bool(int32, int32)> TrisConnectedPredicate )